$ git clone -n https://src.fedoraproject.org/rpms/jakarta-json.git /var/lib/mock/f40-build-2480092-61614/root/chroot_tmpdir/scmroot/jakarta-json
Cloning into '/var/lib/mock/f40-build-2480092-61614/root/chroot_tmpdir/scmroot/jakarta-json'...
$ git fetch origin b4d032bc554190a8729b4a561bc45b62731b335c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jakarta-json
 * [new ref]         b4d032bc554190a8729b4a561bc45b62731b335c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4d032b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild